Alongside the note, McEntire left Ballerini a "fancy" good luck charm.
"It feels like yesterday we said goodbye and yet it somehow has also been the longest year without him," Krystal Keith said in a social media post.
Tennessee native Parton revealed the upcoming summer dates for the musical during a press conference held at Belmont's Fisher Center For the Performing Arts.
Jackson banked his ninth of 26 Hot Country Songs chart-toppers with his wry take on Nashville newcomers.
Male solo artists dominate, though three female solo artists and two groups have also achieved the feat.
